Contact and Support Information

Customers seeking information on cutting conditions, tool selection, pricing, or stock availability should contact local dealers, agents, or Nachi Fujikoshi sales offices. The catalog provides detailed contact numbers for headquarters and regional branches across Japan.

Product Overview: AquaREVO Drills Oil-Hole Series

The AquaREVO Drills Oil-Hole series (models AQRVDOH3D, 5D, 8D) introduces a significant advancement in drill technology with a redesigned oil-hole that doubles coolant flow and cross-sectional area compared to conventional drills. This innovation enhances cooling, lubrication, and chip evacuation, leading to improved tool life and machining accuracy.

Key Features and Benefits

• Enhanced Coolant Flow: Oil-hole design provides over twice the coolant discharge volume, improving cooling especially in critical areas like corners and thin sections.
• Improved Tool Life and Accuracy: Increased coolant velocity reduces work hardening, extending tool durability and maintaining machining precision.
• Advanced Materials and Coatings: Incorporates new materials, shapes, REVO-D coating, and super smooth surface treatments optimized via fluid analysis.
• Superior Durability: Demonstrates longer tool life than competitors in stainless steel (SUS304) and carbon steel (S50C) applications.

Performance Data

Testing under conditions such as φ8.0 mm diameter, 1.5 MPa coolant pressure, and 4,800 rpm shows AquaREVO drills achieve more than double the hole count compared to conventional drills.

Example Machining Conditions:

• Materials: SUS304 stainless steel, S50C carbon steel
• Cutting Speed: 80-120 m/min
• Feed Rate: 0.20-0.254 mm/rev
• Hole Depth: 40 mm (5× diameter)
• Machine: Vertical machining center
• Cutting Fluid: Water-soluble coolant

Material Compatibility and Application Range

The AquaREVO series is suitable for a broad spectrum of materials, including structural steels, alloy and heat-treated steels, various stainless steels, hardened steels (up to 50-57 HRC), titanium alloys, nickel-based alloys, cast irons, and aluminum alloys. Suitability ratings are provided as Excellent (◎), Good (◯), or Not Recommended (－) for different materials and hardness levels.

Technical Specifications and Ordering Information

• Diameter Range: 3.0 mm to 16.0 mm (h6 tolerance)
• Shank Diameter Tolerance: h7
• Tool Material: Cemented carbide
• Helix Angle: 26° to 30°
• Point Angle: 140°

The catalog includes detailed order codes specifying product codes, diameters, flute lengths (3D, 5D, 8D), overall lengths, shank diameters, prices in Japanese Yen, and stock availability. Some items are noted as upcoming releases.

Cutting Conditions and Parameters

Comprehensive cutting condition tables are provided for various work materials and machining environments, including wet machining with water-soluble fluids and Minimum Quantity Lubrication (MQL). Parameters such as rotation speed (rpm) and feed rate (mm/min) vary by drill diameter and material.

• Work Materials: Structural steels (SS400, S50C), carbon steel, cast irons (FC250, FCD400), hardened steels (40-50 HRC), alloy steels (SCM440, SCr), ductile cast iron, stainless steels (ferritic, martensitic, austenitic), mold steels (SKD61, NAK, HPM), nickel-based alloys (Inconel 718), titanium alloys (Ti-6Al-4V).
• Machining Parameters: Rotation speeds range approximately from 480 to 12,700 rpm; feed rates from about 90 to 1,220 mm/min depending on diameter and material.

Cutting Condition Recommendations:

1. Adjust parameters based on machine rigidity, workpiece clamping, and shape.
2. Wet machining assumes use of water-soluble cutting fluids; reduce speed and feed by 20% for non-water soluble fluids.
3. Use internal coolant supply for best results.
4. Non-step drilling is possible; if chip evacuation is insufficient, use step feed with intervals of 0.2 to 1× drill diameter, returning to hole entrance each step.

Product Variants and Dimensions

The drills are available in flute lengths of 3D, 5D, and 8D, with diameters from 3.0 mm to 16.0 mm. Dimensions such as flute length, shank diameter, and total length vary by model and size, with precise tolerances ensuring compatibility and performance.

Stock and Pricing

Prices range approximately from ¥48,700 to ¥55,000 depending on size. Stock availability is indicated, with some products marked as forthcoming.

Important Notes and Recommendations

• Product designs, specifications, and performance may change without prior notice to enhance quality.
• Unauthorized reproduction or copying of catalog content is prohibited.
• Use recommended cutting fluids and machining parameters for optimal tool life and performance.

Summary

The AquaREVO Drills Oil-Hole series offers advanced drilling solutions with innovative oil-hole design, superior coatings, and broad material compatibility. Detailed technical data, cutting parameters, and ordering information enable precise tool selection and optimized machining performance across diverse applications.